If you don't have to bother with snow or temps that are regularly below 40° I would skip the all seasons and get summer tires. You can get long lasting summer tires.
I haven't tried out many tires because I have been using BF Goodridge g-force T/A's that came on the car and they have held up very well, but I can't comment on their longevity. However, whatever you end up picking look for them on the internet. I consistently find tires cheaper on tirerack.com (even with shipping) than at a tire shop or even Costco.
